The Shanghai Index fell below 3,900 points, down more than 2.3%, and the index fell more than 5.7%. Sectors such as robotics, CPO, and optical communications registered the highest declines.

The Shanghai Index fell below 3,900 points, down more than 2.3%, and the index fell more than 5.7%. Sectors such as robotics, CPO, and optical communications registered the highest declines.